Electroless deposition process for zirconium and zirconium alloy

Details Electroless deposition process for zirconium and zirconium alloy Electroless deposition process for zirconium and zirconium alloy

1978-05-11

1981-08-18

Pianalto, Bernard D.

Coating processes

Electrical product produced

Welding electrode

427235, 427239, 427309, 427315, 427333, 427353, 427355, 427405, 4274192, 427437, 427438, B05D 312

Patent

active

042846609

ABSTRACT:
A method is disclosed for preventing stress corrosion cracking or metal embrittlement of a zirconium or zirconium alloy container that is to be coated on the inside surface with a layer of a metal such as copper, a copper alloy, nickel, or iron and used for holding nuclear fuel material as a nuclear fuel element. The zirconium material is etched in an etchant solution, desmutted mechanically or ultrasonically, oxidized to form an oxide coating on the zirconium, cleaned in an aqueous alkaline cleaning solution, activated for electroless deposition of a metal layer and contacted with an electroless metal plating solution. This method provides a boundary layer of zirconium oxide between the zirconium container and the metal layer.

REFERENCES:
patent: 2809127 (1957-10-01), Gibson
patent: 2961337 (1960-11-01), Bryant et al.
patent: 3974322 (1976-08-01), Drabkina et al.
patent: 4029545 (1977-06-01), Gordon et al.
patent: 4128691 (1978-12-01), Shirahata et al.

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